Abstract: The present invention provides a flow-control apparatus with a check function for controlling the flow resistance of a photoresist solution. The apparatus is connected to a photoresist supply device, the photoresist supply device comprising a tank for storing the photoresist solution, a pipe partially submerged in the photoresist solution in the tank to transport the photoresist solution, and a pump for drawing the photoresist solution from the tank. The apparatus comprises a housing and a sphere. The housing comprises a chamber, a top opening positioned at the top of the chamber, and a bottom opening positioned at the bottom of the chamber, wherein the top opening can be mated to an end of the pipe or to a bottom opening of another apparatus. The sphere is moveably set inside the chamber of the housing and increases the flow resistance of the photoresist solution.

Abstract: A fuzzy logic control method for controlling an electrical motor aided, manually powered vehicle is disclosed which is used to assist a rider of the vehicle. The vehicle comprises a gear transmission for driving the vehicle, a manually powered operator for receiving a manual force inputted by the rider for manual operation of the gear transmission, a servo motor for generating a torque output, a reduction gear and a clutch for coupling the torque output of the motor to the gear transmission, a brake for reducing speed of the vehicle, a force sensor for sensing the manual force applied by the rider to the manually powered operator, a speed sensor for sensing speed of the vehicle, a brake sensor for sensing on and off of the brake; and a motor sensor for sensing output of the motor.